Question

How does the nervous system process visual information??

Answer 1

The visual system is remarkable part of CNS. It acts as a receiver of information of visual images and a processor of visual input. The system is comprised of eyes, optic nerves, optic chiasm, optic tracts, visual cortex and visual association cortex. The visual signal from eyes processed in cortex and result in perfect vision and information.

The image from eyes enables two-dimensional information while the combination of sensory information from another part of body and brain improves the information and identifies it as what we see. The central nervous system provides proper information which includes experiences, image optimization and exposure sensation. The brain is the main part of CNS which process signals and combine pre-information stored in memory.

The visual cortex is a system comprised of five areas that serve as a processor of visual inputs. V1 is called primary visual cortex, where the image is initially processed, then the information proceeds to V2, V3, V4, and V5 accordingly for recognition, identification, and categorization as well as the spatial attention for eye movement responses.

The information processed in visual cortex comprises with our experiences and sensations from other senses so that we can see the proper and informative image.